How to setup more granular font change when using Cmd/Ctrl + scroll wheel in IntelliJ products?

Question

Right now the jumps between fonts are huge. It is either too small or too big.

In Qt based apps e.g. in Kate you can change font size with your mouse wheel very precisely in small steps, it almost looks to be fluid/continuous.

However in WebStorm or other IntelliJ software it jumps in big steps.

Any idea how to step using 12, 13, 14, 15 px fonts instead of 12, 16, 20 etc. ?

Here is a video to show what I mean: https://i.imgur.com/Yv7mXcq.mp4

As you can see in the video, Kate (on the right) has a much smoother font changes in smaller pixel jumps than WebStorm (on the left).